Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering最新文献_第6页

Effects of composite coatings on pool boiling performance characteristics in demineralized water 复合涂层对脱盐水池沸腾性能特征的影响

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering Pub Date : 2024-02-12 DOI: 10.1177/09544089241230880

Nitish Kumar, Pradyumna Ghosh, P. Shukla, Roopchand Tandon

{"title":"Effects of composite coatings on pool boiling performance characteristics in demineralized water","authors":"Nitish Kumar, Pradyumna Ghosh, P. Shukla, Roopchand Tandon","doi":"10.1177/09544089241230880","DOIUrl":"https://doi.org/10.1177/09544089241230880","url":null,"abstract":"Nucleate boiling is known for its high heat transfer capacity which occurs at a reasonably low temperature difference between the surface and saturated liquid due to the rapid vaporization process. The vaporization process and boiling heat transfer (BHT) primarily depend on surface morphology and wettability. In this article, surface morphology and wettability of smooth copper surfaces have been altered by coating with binary oxide nanoparticles. Three different combinations of composite coatings: TiO2/SiO2, TiO2/Al2O3 and SiO2/Al2O3 are considered and pool boiling performances have been investigated in demineralized water. Samples have been prepared using electrophoretic deposition techniques in binary oxide nanofluid of 0.1 wt. % concentration. The coating was performed for a fixed duration of 10 min in a medium of hybrid nanofluids of TiO2/SiO2, TiO2/Al2O3 and SiO2/Al2O3 which are referred to as S1, S2 and S3, respectively, in the text. The surface morphology, wettability and coating layer thickness of the sample are varied with the coating duration. The smooth copper surface is hydrophilic while coated samples are hydrophobic by nature. Experiments were carried out on all surfaces, and the results were compared with the smooth copper surface. The maximum enhancements in BHT coefficient for surfaces S1, S2 and S3 are 38%, 43% and 59%, respectively, corresponding to heat flux of ∼275,∼ 200 and ∼220 kW/m2. The reduction in boiling incipient temperature is 0.7, 3.6 and 4.4°C, respectively.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139784759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Torque generation using synthetic jet actuators 利用合成射流致动器产生扭矩

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering Pub Date : 2024-02-12 DOI: 10.1177/09544089241230267

Vardhan Mittal, Venugopal Arumuru

引用次数: 0

Numerical investigation of corrugated wall configuration on hydrothermal performance and irreversibility characteristics 波纹壁构造对水热性能和不可逆特性的数值研究

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering Pub Date : 2024-02-12 DOI: 10.1177/09544089241230154

Brajesh Kumar Kanchan, Guddakesh Kumar Chandan, Mohd Aslam

{"title":"Numerical investigation of corrugated wall configuration on hydrothermal performance and irreversibility characteristics","authors":"Brajesh Kumar Kanchan, Guddakesh Kumar Chandan, Mohd Aslam","doi":"10.1177/09544089241230154","DOIUrl":"https://doi.org/10.1177/09544089241230154","url":null,"abstract":"Improving thermal performance while minimizing pressure differences and irreversibility characteristics remains a persistent challenge in thermo-mechanical systems. This study investigates a corrugated channel with different profiles (triangular, square, and elliptical) for steady, laminar, incompressible, and mixed convective flow through a backward-facing step. The impact of corrugated wall geometrical characteristics, such as height, width, and angle, on hydrothermal performance is explored. Additionally, the study investigates the influence of inline and staggered arrangements for various channel configurations. The finite element method is employed for numerical investigation of thermohydraulic and irreversibility characteristics. Results, presented through streamlines, contours, and line plots, reveal a significant modulation of reattachment length based on corrugate architecture. Notably, the local Nusselt number is highest at the initial interaction with the corrugated channel, regardless of the channel configuration. Hydrothermal measurements highlight elliptical configurations as optimal, exhibiting a 60% improvement in thermal performance compared to a non-corrugated channel. Moreover, increasing corrugate height results in higher Nusselt numbers, pressure drops, and irreversibility. Reduced corrugate width leads to a higher Nusselt number due to the formation of a secondary recirculation zone. An elliptical corrugate with a 0° angle inclination yields the highest Nusselt number by facilitating a stronger recirculation zone. Thus, optimal corrugated wall configuration involves higher height, lower width, and no angle inclination, emphasizing the significant impact of these parameters on hydrothermal performance and their importance as design characteristics.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"73 40","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139843891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine learning approach for prediction analysis of aluminium alloy on the surface roughness using CO2 laser machining 使用二氧化碳激光加工铝合金表面粗糙度的机器学习预测分析方法

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering Pub Date : 2024-02-12 DOI: 10.1177/09544089241231093

Vikas Sharma, Jaiinder Preet Singh, Roshan Raman, G. Bathla, Abhineet Saini

引用次数: 0

Numerical investigation of corrugated wall configuration on hydrothermal performance and irreversibility characteristics 波纹壁构造对水热性能和不可逆特性的数值研究

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering Pub Date : 2024-02-12 DOI: 10.1177/09544089241230154

Brajesh Kumar Kanchan, Guddakesh Kumar Chandan, Mohd Aslam

{"title":"Numerical investigation of corrugated wall configuration on hydrothermal performance and irreversibility characteristics","authors":"Brajesh Kumar Kanchan, Guddakesh Kumar Chandan, Mohd Aslam","doi":"10.1177/09544089241230154","DOIUrl":"https://doi.org/10.1177/09544089241230154","url":null,"abstract":"Improving thermal performance while minimizing pressure differences and irreversibility characteristics remains a persistent challenge in thermo-mechanical systems. This study investigates a corrugated channel with different profiles (triangular, square, and elliptical) for steady, laminar, incompressible, and mixed convective flow through a backward-facing step. The impact of corrugated wall geometrical characteristics, such as height, width, and angle, on hydrothermal performance is explored. Additionally, the study investigates the influence of inline and staggered arrangements for various channel configurations. The finite element method is employed for numerical investigation of thermohydraulic and irreversibility characteristics. Results, presented through streamlines, contours, and line plots, reveal a significant modulation of reattachment length based on corrugate architecture. Notably, the local Nusselt number is highest at the initial interaction with the corrugated channel, regardless of the channel configuration. Hydrothermal measurements highlight elliptical configurations as optimal, exhibiting a 60% improvement in thermal performance compared to a non-corrugated channel. Moreover, increasing corrugate height results in higher Nusselt numbers, pressure drops, and irreversibility. Reduced corrugate width leads to a higher Nusselt number due to the formation of a secondary recirculation zone. An elliptical corrugate with a 0° angle inclination yields the highest Nusselt number by facilitating a stronger recirculation zone. Thus, optimal corrugated wall configuration involves higher height, lower width, and no angle inclination, emphasizing the significant impact of these parameters on hydrothermal performance and their importance as design characteristics.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"42 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139784035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of mechanical and tribological behavior of Al-Ni-Co-MWCNT composites prepared by powder metallurgy technique 粉末冶金技术制备的 Al-Ni-Co-MWCNT 复合材料的力学和摩擦学行为研究

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering Pub Date : 2024-02-12 DOI: 10.1177/09544089241228942

Rama Thirumurugan, M. Padmanaban, T. Ramkumar, D. Shanmugam

{"title":"Investigation of mechanical and tribological behavior of Al-Ni-Co-MWCNT composites prepared by powder metallurgy technique","authors":"Rama Thirumurugan, M. Padmanaban, T. Ramkumar, D. Shanmugam","doi":"10.1177/09544089241228942","DOIUrl":"https://doi.org/10.1177/09544089241228942","url":null,"abstract":"The intended research is to improve the mechanical and tribological properties of Al-Ni-Co alloy by reinforcing the alloy with multiwall carbon nanotubes (MWCNT) using powder metallurgy. In this work MWCNT content varied from 0.5, 1.0, and 1.5 as wt. % and mixed with the Al-Ni-Co matrix. The composites are fabricated by cold compaction and conventional sintering technique. The presence of homogenous distribution was analyzed by using scanning electron microscope (SEM) with energy dispersive spectroscopy. The hardness of the composites was also explored by using Vickers' indentation and found that porosity plays a vital role and it directly influences the hardness and the mechanical properties. The wear behavior of the composites was measured using the Pin-on-Disc method at room temperature. The results revealed that 84.5Al-10Ni-4Co-1.5MWCNT possessed less volume loss (0.458 mm3) and coefficient of friction (0.45) compared to other samples. After wear analysis, the surface morphology was analyzed using SEM. The outcome of the research is MWCNT plays a vital role to improve the mechanical and tribological properties of Al-Ni-Co composites.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"85 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139784493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine learning approach for prediction analysis of aluminium alloy on the surface roughness using CO2 laser machining 使用二氧化碳激光加工铝合金表面粗糙度的机器学习预测分析方法

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering Pub Date : 2024-02-12 DOI: 10.1177/09544089241231093

Vikas Sharma, Jaiinder Preet Singh, Roshan Raman, G. Bathla, Abhineet Saini

引用次数: 0

Critical review on thermal performance enhancement techniques for flat plate solar collectors 平板太阳能集热器热性能提升技术评述

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering Pub Date : 2024-02-12 DOI: 10.1177/09544089241228105

Kumar Gaurav, Suresh Kant Verma

{"title":"Critical review on thermal performance enhancement techniques for flat plate solar collectors","authors":"Kumar Gaurav, Suresh Kant Verma","doi":"10.1177/09544089241228105","DOIUrl":"https://doi.org/10.1177/09544089241228105","url":null,"abstract":"Supply of energy against continuous increase in energy demand is a great challenge for the present time. This has compelled the researchers to develop energy-efficient and performance-enhanced devices. Solar energy, being the capable source to supply the clean energy can be harvested with the help of flat plate solar collectors (FPSCs). In order to enhance the thermal performance of FPSC researchers have considered various aspects, for example, design modification, heat transfer fluid having enhanced thermophysical properties, use of nanofluids, reduction in heat loss, use of enhancement devices, use of phase change materials and porous materials. The present article describes in detail these methods and compares the results obtained by the respective researches. Experimental as well as numerical works have also been presented. A comprehensive review for the thermal performance enhancement techniques used in FPSC has been presented. The objective of this review is to provide a valuable framework for evaluating and comparing different techniques for enhancing FPSC performance. The review aims to help identify the most appropriate approach and gaps in current research and proposes potential areas for future enhancements, which is expected to assist researchers.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"63 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139844379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of composite coatings on pool boiling performance characteristics in demineralized water 复合涂层对脱盐水池沸腾性能特征的影响

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering Pub Date : 2024-02-12 DOI: 10.1177/09544089241230880

Nitish Kumar, Pradyumna Ghosh, P. Shukla, Roopchand Tandon

{"title":"Effects of composite coatings on pool boiling performance characteristics in demineralized water","authors":"Nitish Kumar, Pradyumna Ghosh, P. Shukla, Roopchand Tandon","doi":"10.1177/09544089241230880","DOIUrl":"https://doi.org/10.1177/09544089241230880","url":null,"abstract":"Nucleate boiling is known for its high heat transfer capacity which occurs at a reasonably low temperature difference between the surface and saturated liquid due to the rapid vaporization process. The vaporization process and boiling heat transfer (BHT) primarily depend on surface morphology and wettability. In this article, surface morphology and wettability of smooth copper surfaces have been altered by coating with binary oxide nanoparticles. Three different combinations of composite coatings: TiO2/SiO2, TiO2/Al2O3 and SiO2/Al2O3 are considered and pool boiling performances have been investigated in demineralized water. Samples have been prepared using electrophoretic deposition techniques in binary oxide nanofluid of 0.1 wt. % concentration. The coating was performed for a fixed duration of 10 min in a medium of hybrid nanofluids of TiO2/SiO2, TiO2/Al2O3 and SiO2/Al2O3 which are referred to as S1, S2 and S3, respectively, in the text. The surface morphology, wettability and coating layer thickness of the sample are varied with the coating duration. The smooth copper surface is hydrophilic while coated samples are hydrophobic by nature. Experiments were carried out on all surfaces, and the results were compared with the smooth copper surface. The maximum enhancements in BHT coefficient for surfaces S1, S2 and S3 are 38%, 43% and 59%, respectively, corresponding to heat flux of ∼275,∼ 200 and ∼220 kW/m2. The reduction in boiling incipient temperature is 0.7, 3.6 and 4.4°C, respectively.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"58 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139844702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Critical review on thermal performance enhancement techniques for flat plate solar collectors 平板太阳能集热器热性能提升技术评述

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering Pub Date : 2024-02-12 DOI: 10.1177/09544089241228105

Kumar Gaurav, Suresh Kant Verma

{"title":"Critical review on thermal performance enhancement techniques for flat plate solar collectors","authors":"Kumar Gaurav, Suresh Kant Verma","doi":"10.1177/09544089241228105","DOIUrl":"https://doi.org/10.1177/09544089241228105","url":null,"abstract":"Supply of energy against continuous increase in energy demand is a great challenge for the present time. This has compelled the researchers to develop energy-efficient and performance-enhanced devices. Solar energy, being the capable source to supply the clean energy can be harvested with the help of flat plate solar collectors (FPSCs). In order to enhance the thermal performance of FPSC researchers have considered various aspects, for example, design modification, heat transfer fluid having enhanced thermophysical properties, use of nanofluids, reduction in heat loss, use of enhancement devices, use of phase change materials and porous materials. The present article describes in detail these methods and compares the results obtained by the respective researches. Experimental as well as numerical works have also been presented. A comprehensive review for the thermal performance enhancement techniques used in FPSC has been presented. The objective of this review is to provide a valuable framework for evaluating and comparing different techniques for enhancing FPSC performance. The review aims to help identify the most appropriate approach and gaps in current research and proposes potential areas for future enhancements, which is expected to assist researchers.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"90 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139784531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0